1 | /* |
2 | * strcmp test. |
3 | * |
4 | * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
5 | * See https://llvm.org/LICENSE.txt for license information. |
6 | * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
7 | */ |
8 | |
9 | #include <stdint.h> |
10 | #include <stdio.h> |
11 | #include <stdlib.h> |
12 | #include <string.h> |
13 | #include "stringlib.h" |
14 | |
15 | static const struct fun |
16 | { |
17 | const char *name; |
18 | int (*fun)(const char *s1, const char *s2); |
19 | } funtab[] = { |
20 | #define F(x) {#x, x}, |
21 | F(strcmp) |
22 | #if __aarch64__ |
23 | F(__strcmp_aarch64) |
24 | # if __ARM_FEATURE_SVE |
25 | F(__strcmp_aarch64_sve) |
26 | # endif |
27 | #elif __arm__ |
28 | # if __ARM_ARCH >= 7 && __ARM_ARCH_ISA_ARM >= 1 |
29 | F(__strcmp_arm) |
30 | # elif __ARM_ARCH == 6 && __ARM_ARCH_6M__ >= 1 |
31 | F(__strcmp_armv6m) |
32 | # endif |
33 | #endif |
34 | #undef F |
35 | {0, 0} |
36 | }; |
37 | |
38 | static int test_status; |
39 | #define ERR(...) (test_status=1, printf(__VA_ARGS__)) |
40 | |
41 | #define A 32 |
42 | #define LEN 250000 |
43 | static char s1buf[LEN+2*A]; |
44 | static char s2buf[LEN+2*A]; |
45 | |
46 | static void *alignup(void *p) |
47 | { |
48 | return (void*)(((uintptr_t)p + A-1) & -A); |
49 | } |
50 | |
51 | static void test(const struct fun *fun, int s1align, int s2align, int len, int diffpos) |
52 | { |
53 | char *src1 = alignup(p: s1buf); |
54 | char *src2 = alignup(p: s2buf); |
55 | char *s1 = src1 + s1align; |
56 | char *s2 = src2 + s2align; |
57 | int r; |
58 | |
59 | if (len > LEN || s1align >= A || s2align >= A) |
60 | abort(); |
61 | if (diffpos > 1 && diffpos >= len-1) |
62 | abort(); |
63 | |
64 | for (int i = 0; i < len+A; i++) |
65 | src1[i] = src2[i] = '?'; |
66 | for (int i = 0; i < len-1; i++) |
67 | s1[i] = s2[i] = 'a' + i%23; |
68 | if (diffpos > 1) |
69 | s1[diffpos]++; |
70 | s1[len] = s2[len] = '\0'; |
71 | |
72 | r = fun->fun(s1, s2); |
73 | |
74 | if (((diffpos <= 1) && r != 0) || (diffpos > 1 && r == 0)) { |
75 | ERR("%s(align %d, align %d, %d) failed, returned %d\n" , |
76 | fun->name, s1align, s2align, len, r); |
77 | ERR("src1: %.*s\n" , s1align+len+1, src1); |
78 | ERR("src2: %.*s\n" , s2align+len+1, src2); |
79 | } |
80 | } |
81 | |
82 | int main() |
83 | { |
84 | int r = 0; |
85 | for (int i=0; funtab[i].name; i++) { |
86 | test_status = 0; |
87 | for (int d = 0; d < A; d++) |
88 | for (int s = 0; s < A; s++) { |
89 | int n; |
90 | for (n = 0; n < 100; n++) { |
91 | test(fun: funtab+i, s1align: d, s2align: s, len: n, diffpos: 0); |
92 | test(fun: funtab+i, s1align: d, s2align: s, len: n, diffpos: n / 2); |
93 | } |
94 | for (; n < LEN; n *= 2) { |
95 | test(fun: funtab+i, s1align: d, s2align: s, len: n, diffpos: 0); |
96 | test(fun: funtab+i, s1align: d, s2align: s, len: n, diffpos: n / 2); |
97 | } |
98 | } |
99 | printf(format: "%s %s\n" , test_status ? "FAIL" : "PASS" , funtab[i].name); |
100 | if (test_status) |
101 | r = -1; |
102 | } |
103 | return r; |
104 | } |
105 | |